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Ontario Peak


Location: San Bernardino County, about 9 miles north of Upland, 45 miles from Los Angeles


Auto Club: Los Angeles and Vicinity
Forest Service: Angeles National Forest
USGS Topo: Cucamonga Peak 7½
HPS: Route(s), waypoints and explanation of usage

Nearby Peaks: Bighorn Peak, Sugarloaf Peak

Printable version of this route


(USFS Adventure Pass required)
Distance: 12 miles round trip on trail
Gain: 3700'
Time: 6-7 hours round trip
Rating: Class 1, strenuous

Original: Warren E. von Pertz, March 1968


  • Take the 210 freeway east to Baseline Road exit in the City of Claremont. Turn left (west) at the bottom of the off-ramp onto Baseline Road.
  • Almost immediately, take the first right (north) onto Padua Ave.
  • Go 1.8 miles north on Padua to the intersection with Mount Baldy Rd. Turn right (northeast).
  • Take this road northeast and then north about seven miles to Mt. Baldy Village.
  • Continue two and a half miles past Baldy Village to a fork at Icehouse Canyon, keep right.
  • Go a short distance to a parking lot. Park here.

Note: There is a good parking lot for ridesharing in this area. To get there, after turning west on Baseline Road, continue past Padua Avenue a short distance to Mills Avenue. Turn north on Mills, and continue to Mt. Baldy Road. The parking lot is at the northeast corner of this intersection.


  • From the parking area (5000'), trail 7W07 starts just to the right of the old Icehouse Lodge foundation.
  • Hike up this trail about 3/4 mile to a trail junction with the Chapman Trail.
  • Continue straight up the canyon past Columbine Spring to another junction with the Chapman Trail.
  • Turn right and follow the trail up to Icehouse Saddle. It is also possible to take the Chapman Trail. It adds about 1 1/2 miles to Icehouse Saddle.
  • There are a number of trails at the saddle. Take the first one to the right and follow it about a mile to Kelly's Camp.
  • Pass uphill through the camp and pick up the trail again which goes up to the top of the ridge.
  • Turn right and follow the trail out to the summit.


Ontario Peak and Sugarloaf Peak are in the Cucamonga Wilderness. A permit is required. Applications are available on the trail just past the Icehouse Canyon Trailhead. Fill it and drop in the box, or contact the USFS Mt. Baldy Schoolhouse Visitor Center in Mt. Baldy Village at (909) 982-2829 (8:00 am to 4:30 pm). A permit can be obtained in advancy be writing to:

San Gabriel River Ranger District
Angeles National Forest
110 North Wabash Avenue
Glendora, CA 91741
(626) 335-1251


Ontario Peak is named for the Canadian province of the same name.

History of Summit Signature

Climbing Archives

Please report any corrections or changes to the Mountain Records Chair.

Hundred Peaks Section, Angeles Chapter, Sierra Club
Published 4-April-2014
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